The previous section described the \(\ell _p^p\) -median sketch assuming infinite precision on the random variables, as well as complete access to the randomness used. Here, we remark on how to: 1) utilize bounded precision on the entries of \(\)  (to avoid storing infinite-precision real numbers), and 2) utilize Nisan's pseudorandom generator in order to maintain \(\)  implicitly. This technique, first used in [1]} for the \(\ell _p\) -sketch, is by now standard in the streaming literature.
